Server access error

Hello all,

trying to launch native apps from the web interface (Assembly design in this case), I have the latest hotFix installed (see first picture) but once loading I get an "Access to this server is not granted to user" error (see second picture).

My administrator assures me that my account has the necessary licenses assigned. I also tried different apps and several other browsers.

Possibly related, when I load Product Explore in the web interface I also now get an error, which I did not before I tried to install native apps (see third picture).
Any help would be greatly appreciated, I'm at loss here!